Some fixes I've found using REST client

Rest/com.microsoft.alm.client.workitemtracking/src/main/generated/com/microsoft/alm/workitemtracking/webapi/WorkItemTrackingHttpClientBase.java

@@ -1953,6 +1953,47 @@ public List<WorkItem> getWorkItems(
         return super.sendRequest(httpRequest, new TypeReference<List<WorkItem>>() {});
     }
 
+    /** 
+     * @param document 
+     *            
+     * @param project 
+     *            
+     * @param validateOnly 
+     *            
+     * @param bypassRules 
+     *            
+     * @return WorkItem
+     */
+    public WorkItem createWorkItem(
+        final JsonPatchDocument document, 
+        final String type,
+        final String project,
+        final Boolean validateOnly, 
+        final Boolean bypassRules) {
+
+        final UUID locationId = UUID.fromString("62d3d110-0047-428c-ad3c-4fe872c91c74"); //$NON-NLS-1$
+        final ApiResourceVersion apiVersion = new ApiResourceVersion("2.1"); //$NON-NLS-1$
+
+        final Map<String, Object> routeValues = new HashMap<String, Object>();
+        routeValues.put("project", project);
+        routeValues.put("type", type); //$NON-NLS-1$
+
+        final NameValueCollection queryParameters = new NameValueCollection();
+        queryParameters.addIfNotNull("validateOnly", validateOnly); //$NON-NLS-1$
+        queryParameters.addIfNotNull("bypassRules", bypassRules); //$NON-NLS-1$
+
+        final Object httpRequest = super.createRequest(HttpMethod.PATCH,
+                                                       locationId,
+                                                       routeValues,
+                                                       apiVersion,
+                                                       document,
+                                                       APPLICATION_JSON_PATCH_TYPE,
+                                                       queryParameters,
+                                                       APPLICATION_JSON_TYPE);
+
+        return super.sendRequest(httpRequest, WorkItem.class);
+    }
+
     /** 
      * @param document 
      *            

Rest/com.microsoft.alm.client.workitemtracking/src/main/generated/com/microsoft/alm/workitemtracking/webapi/models/LogicalOperation.java

@@ -39,17 +39,17 @@ public String toString() {
         final String name = super.toString();
 
         if (name.equals("N_O_N_E")) { //$NON-NLS-1$
-            return "nONE"; //$NON-NLS-1$
+            return "none"; //$NON-NLS-1$
         }
 
         if (name.equals("A_N_D")) { //$NON-NLS-1$
-            return "aND"; //$NON-NLS-1$
+            return "and"; //$NON-NLS-1$
         }
 
         if (name.equals("O_R")) { //$NON-NLS-1$
-            return "oR"; //$NON-NLS-1$
+            return "or"; //$NON-NLS-1$
         }
 
         return null;
     }
-}
+}

Rest/com.microsoft.alm.client.workitemtracking/src/main/generated/com/microsoft/alm/workitemtracking/webapi/models/WorkItemType.java

@@ -21,7 +21,7 @@ public class WorkItemType
     extends WorkItemTrackingResource {
 
     private String description;
-    private List<WorkItemTypeFieldInstance> fields;
+    private List<WorkItemTypeFieldInstance> fieldInstances;
     private String name;
     private String xmlForm;
 
@@ -33,12 +33,12 @@ public void setDescription(final String description) {
         this.description = description;
     }
 
-    public List<WorkItemTypeFieldInstance> getFields() {
-        return fields;
+    public List<WorkItemTypeFieldInstance> getFieldInstances() {
+        return fieldInstances;
     }
 
-    public void setFields(final List<WorkItemTypeFieldInstance> fields) {
-        this.fields = fields;
+    public void setFieldInstances(final List<WorkItemTypeFieldInstance> fieldInstances) {
+        this.fieldInstances = fieldInstances;
     }
 
     public String getName() {

Rest/com.microsoft.alm.client.workitemtracking/src/main/generated/com/microsoft/alm/workitemtracking/webapi/models/WorkItemTypeFieldInstance.java

@@ -18,16 +18,10 @@
  */
 public class WorkItemTypeFieldInstance {
 
-    private WorkItemFieldReference field;
     private String helpText;
-
-    public WorkItemFieldReference getField() {
-        return field;
-    }
-
-    public void setField(final WorkItemFieldReference field) {
-        this.field = field;
-    }
+    private String name;
+    private String referenceName;
+    private String url;
 
     public String getHelpText() {
         return helpText;
@@ -36,4 +30,28 @@ public String getHelpText() {
     public void setHelpText(final String helpText) {
         this.helpText = helpText;
     }
+
+    public String getName() {
+      return name;
+    }
+
+    public void setName(String name) {
+      this.name = name;
+    }
+
+    public String getReferenceName() {
+      return referenceName;
+    }
+
+    public void setReferenceName(String referenceName) {
+      this.referenceName = referenceName;
+    }
+
+    public String getUrl() {
+      return url;
+    }
+
+    public void setUrl(String url) {
+      this.url = url;
+    }
 }